Fleksy For iPhone

Fleksy was one of the earliest third-party keyboards that showed up for the iPhone when iOS 8 was announced. It features an elegant, flat design, and is generally very easy on the eyes due to its low-contrast color schemes (unless you chose neon green, of course). Autocorrect gets a facelift, and typing is generally a little less of a cramped experience with more spaced-out keys.

You can also shrink the keyboard down on larger screens (think iPhone 6 Plus).